Ard Biesheuvel e15dd4949a efi/arm64: Preserve FP/SIMD registers on UEFI runtime services calls ... According to the UEFI spec section 2.3.6.4, the use of FP/SIMD instructions is allowed, and should adhere to the AAPCS64 calling convention, which states that 'only the bottom 64 bits of each value stored in registers v8-v15 need to be preserved' (section 5.1.2). This applies equally to UEFI Runtime Services called by the kernel, so make sure the FP/SIMD register file is preserved in this case. We do this by enabling the wrappers for UEFI Runtime Services (CONFIG_EFI_RUNTIME_WRAPPERS) and inserting calls to kernel_neon_begin()and kernel_neon_end() into these wrappers. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com>		2014-07-07 20:29:42 +01:00
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asm	efi/arm64: Preserve FP/SIMD registers on UEFI runtime services calls	2014-07-07 20:29:42 +01:00
uapi/asm	- Optimised assembly string/memory routines (based on the AArch64 Cortex	2014-06-06 10:43:28 -07:00